Lochinvar Amicus Guide

Amicus
Air to Water Heat Pumps
Installation, commissioning, user
and maintenance instructions
Installation manual_LAHP252-5004LT_March 2021
READ AND UNDERSTAND THE
INSTRUCTIONS
Read and fully understand all instructions
before attempting to operate maintain or
install the unit.
Models:
LAHP-252LT to LAHP-5004LT

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1. CONTENTS
1INTRODUCTION .................................................................................................................................................................. 5
2. SAFETY ...................................................................................................................................................................... 10
Refrigerant handling............................................................................................................................................ 10
Prevent inhalation of high vapourconcentration.................................................................................................. 11
Procedures to be adopted in the event of accidental release of refrigerant ............................................................ 11
Main Toxicological Information Regarding the Type of refrigerant used................................................................. 11
First Aid Measures............................................................................................................................................... 11
3. TECHNICAL CHARACTERISTICS........................................................................................................................................... 12
Accessories description....................................................................................................................................... 13
4. TECHNICAL DATA.............................................................................................................................................................. 15
Operational limits ............................................................................................................................................... 16
Domestic hot water production........................................................................................................................... 18
Correction tables................................................................................................................................................. 19
Sound data ......................................................................................................................................................... 20
5. INSTALLATION .................................................................................................................................................................. 21
General safety guidelines and use of symbols....................................................................................................... 21
Personal protective equipment ........................................................................................................................... 21
Inspection........................................................................................................................................................... 22
Storage ............................................................................................................................................................... 22
Unpacking........................................................................................................................................................... 22
Lifting and handling............................................................................................................................................. 22
Location and minimum technicalclearances ........................................................................................................ 24
Installation of rubber vibration dampers (KAVG).................................................................................................. 27
Serial interface card RS485(INSE) ........................................................................................................................ 27
Installation of condensate drip tray(BRCA) .......................................................................................................... 28
Hydraulic connections......................................................................................................................................... 29
Chemical characteristics of thewater.................................................................................................................. 29
Hydraulic components ........................................................................................................................................ 30
User circuit minimum watercontent.................................................................................................................... 31
Minimum domestic hot water circuitcontent....................................................................................................... 31
Filling the hydraulic circuit................................................................................................................................... 31
Emptying the installation..................................................................................................................................... 31
Typical installations............................................................................................................................................. 32
Electric connections: preliminary safetyinformation............................................................................................ 34
Electric data........................................................................................................................................................ 35
Electric connections ............................................................................................................................................ 37
USER CIRCUIT WATER INLET SENSOR (BTI)........................................................................................................... 37
USER CIRCUIT WATER PUMP ............................................................................................................................... 37
DOMESTIC HOT WATER SENSOR (BTS)................................................................................................................. 37
PRIORITY SELECTOR (Hot water).......................................................................................................................... 39
Positioning of the user circuit water inlet sensor (BTI)........................................................................................... 40
Correct positioning of the BTI sensor................................................................................................................... 40
Positioning of the domestic hot water circuit sensor (BTS) .................................................................................... 40
Refrigerant circuit layout..................................................................................................................................... 41
6. UNIT START UP ................................................................................................................................................................. 43
Preliminary checks .............................................................................................................................................. 43
Before start-up.................................................................................................................................................... 43
Device Set-point DifferentialReset ...................................................................................................................... 44
Controls during unit operation............................................................................................................................. 44
Position of the controlpanel................................................................................................................................ 45
To remote the control.......................................................................................................................................... 47
Switch the unit on ............................................................................................................................................... 48
Switch the unit on from digital input.................................................................................................................... 49
Stop.................................................................................................................................................................... 49
Set point ............................................................................................................................................................. 50

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PROBES key......................................................................................................................................................... 51
ALARM key.......................................................................................................................................................... 51
CIRC key.............................................................................................................................................................. 52
SERVICE key ........................................................................................................................................................ 54
Weather compensated function.......................................................................................................................... 57
Setting date and time.......................................................................................................................................... 58
Compressor maintenance.................................................................................................................................... 59
Circuit maintenance ............................................................................................................................................ 59
Alarms ................................................................................................................................................................ 60
Defrost ............................................................................................................................................................... 60
Electrical heater.................................................................................................................................................. 62
I/O Status (Input/Output).................................................................................................................................... 62
Screw compressor (If available) ........................................................................................................................... 63
Auxiliary output .................................................................................................................................................. 63
Sanitary water..................................................................................................................................................... 64
Upload / download ............................................................................................................................................. 64
Control panel ...................................................................................................................................................... 64
6.8 Acoustic signal silencing ................................................................................................................................ 64
7. MAINTENANCE OF THE UNIT............................................................................................................................................. 65
Periodical checks................................................................................................................................................. 66
8. DECOMMISSIONING ......................................................................................................................................................... 67
Disconnecttheunit ................................................................................................................................................... 67
Disposal, recovery andrecycling .......................................................................................................................... 67
RAEE Directive (EU Only)..................................................................................................................................... 67
9. DIAGNOSIS ANDTROUBLESHOOTING................................................................................................................................ 68
Fault finding........................................................................................................................................................ 68

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1 INTRODUCTION
Preliminary information
Reproduction, storage or transmission of any part of this publication inany form, without the prior written consent of Lochinvar, is pro hibited.
The unit to which these instructions refer, is designed to be used for the purposes described and to be operated in accordance with these
instructions.
Lochinvar will not beliable for claims for damage caused topersons, animals, material goods or property caused by improperinstalla tion,
adjustment and maintenance or improper use.Any use not specified in this manual is prohibited.
This document isintendedto provideinformation only anddoes not form a contractwiththird parties.
Lochinvar pursues a policy of constant improvement and development of its products and therefore reserves the right to change the specifications and
the documentation at any time, without notice and without obligation toupdate existing equipment.
Aim and content of themanual
These instructions are intended to provide the information required for the selection, installation, use and maintenance of t he unit. They
havebeen preparedinaccordancewiththeEuropeanUnionlaws and withthetechnical standardsin forceatthedate ofissueofthe instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
How to store thismanual
The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent
user.
Manual Update
Itis recommended that the manual is updatedtothe latest revision
available. Ifupdates aresenttothe customer they must beaddedto
thismanual.
The latest information regarding the use of its products is available by contacting Lochinvar.
How to use thismanual
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting,
han dling, installation, maintaining, or dismantlingthe unit inorder toeliminate uncertainty and reducerisk.
In these instructions symbols have been used (described inthe following paragraphs) to draw the attention of operators
and users to the operations that have a higher risk and which must be performed safely.

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Potential Risks
Whilst the unit has been designed tominimize any risk posed to the safety of people who will interact with it, it has not beentechnically
possibletoeliminatecompletely thecausesof risk Itisthereforenecessarytorefertotherequirementsandsymbolismbelow:
LOCATION OF RISK
POTENTIAL RISK
METHOD OF INJURY
PRECAUTIONS
Thermal heat
exchangers
Small stab wounds
Contact
Avoid any contact use protective gloves
Fan and fan grilles.
Cuts, eye damage,
broken bones.
Insertion of sharp
objects through the grid
while the fans are
operating.
Never put objects through the protection grilles.
Internal components
compressors and grills
Burns
Contact
Avoid any contact use protective gloves
Internal component:
electric cables and
metallic parts
Electrocution, severe
burns.
Defect in the supply
cable insulation, live
metallic parts.
Adequate protection of power cables, ensure correct
earthing of all metal parts.
External to unit,
enclosure
Poisoning and severe
burns
Fire due to short circuit
or overheating of the
supply cable to the unit
Size cables and main protection systems in
accordance with IEE regulations
Low pressure safety
valve.
Poisoning,
Severe burns.
High evaporating pressure causing a refrigerant
discharge during maintenance. Carefully check the
evaporating pressure during the maintenance
operations.
High pressure safety
valve
Poisoning and severe
burns, hearing loss
Activation of the high
pressure safety valve
with the refrigerant
circuit open
If possible do not open the refrigerant circuit valve,
carefully check the condensing circuit pressure, use
all protective equipment as required by law
Entire unit
External fire
Fire due to natural
disasters or
combustions of
elements nearby unit
Provide the necessary fire-fighting equipment
Entire unit
Explosions, injuries
burns
Breakages due to
natural disasters or
earthquake
Take all necessary precautions as required by law
applicable to the installation site

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General Description of SymbolsUsed
SafetysymbolscombinedinaccordancewithISO3864-2:
SafetysymbolscombinedinaccordancewithISO3864-2:

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Safety symbols used
GENERAL RISK
Observe all signs placed next to the pictogram.The failure to follow directions may create a risk situation that may be
injurious to theuser.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical
hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
The symbol identifies Earthing connection points in the unit.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
Limitations and prohibiteduse
The machineis designed and built exclusively for the uses described in“Limitations of use” of the technical manual. Any otheruseisprohibited
because it may pose a potentialrisk to the health of operators and users.
The unit is not suitable for operations in environments:
• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
• where there are electromagneticfields;
• where there are aggressiveatmospheres

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Unit identification
Each unit has a rating platethat provideskeyinformation regarding the machine. Therating plate may differ from the one shown below asthe example is
for a standard unit without accessories. For all electrical information not provided on the label, refer to the wiring diagram.
A facsimile of the label is shown below:
The product label should never be removed from the unit.

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2. SAFETY
Warningrepotentiallyhazardoustoxicsubstances
Identification of the Typeof Refrigerant Fluid Used: R410A
• Difluoromethane (HFC-32) 50% by weight CAS No.: 000075-10-5
• Pentafluoroethane (HFC-125) 50% by weight CAS No.: 000354-33-6
Identification of the Type of OilUsed.
The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
Persistence and degradation
Therefrigerants useddecomposeintheloweratmosphere (troposphere)relativelyquickly.Thedecomposedproducts arehighly dispersible
and therefore have a very low concentration. They do not influence the photochemical smog which is not among the VOC volatile organic
compounds (as stipulated inthe guidelines totheUNECE). The constituent refrigerants of R407C (R32, R125 and R134a), donot damage the
ozone layer. These substances are regulated under theMontreal Protocol (revised1992) and regulations ECno. 2037/200 of 29June 2000.
Effects of discharges
Discharges into the atmosphere of this product does not cause a long-term contamination.
Exposure controls and personalprotection
Wear protective clothing and gloves, protect your eyes and face
Professional exposure limits
R410A
HFC-32 TWA1000ppm
HFC-125 TWA1000ppm
R EFRIGERANT HANDLING
For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets
available from the refrigerant and oil manufacturers.
ENVIRONMENTAL PROTECTION: Read the ecological information and the following instructions carefully.
Users and maintenance personnel must be adequately informed about the possible risks of handling potentially toxic
substances. Failure to follow such instructions can cause damage to personnel or to the unit.

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P REVENT INHALATION OF HIGH VAPOURCONCENTRATION
Atmospheric concentrations of refrigerant must be minimized and kept to a level that is below the occupational exposure limit. Vapour is
heavier than air and can form dangerous concentrations near the ground where the ventilation rate is lower. Always ensure adequate
ventilation. Avoid contact with open flames and hot surfaces as this can cause toxic and irritating decomposition products to form. Avoid
contact between liquid refrigerant and the eyes or skin.
P ROCEDURES TO BE ADOPTED IN THE EVENT OF ACCIDENTAL RELEASE OF REFRIGERANT
Ensure suitable personal protection (especially respiratory protection) during cleaning operations.
Ifdeemed safe, isolate thesource of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to
evapo rate. If the loss is substantial ensure that measures are taken to adequately ventilate the area.
Contain spilled material with sand, earth or other suitable absorbent material.
Do not allow the refrigerant to enter drains, sewers or basements, as pockets of vapour can form.
M AIN T OXICOLOGICAL I NFORMATION R EGARDING THE T YPE OF REFRIGERANT USED
Inhalation
A high atmospheric concentration can cause anaesthetic effects with possible loss of consciousness. Prolonged exposure may lead to
irregular heartbeat and cause sudden death. Higher concentrations may cause asphyxia due to the reduced oxygen content in the
atmo sphere.
Contact with skin
Splashesofnebulousliquidcanproducefrostbite.Probablynothazardousifabsorbedthroughtheskin.Repeatedorprolongedcontactmay
remove the skin’s natural oils, with consequent dryness, cracking and dermatitis.
Contact with eyes
Splashes of liquid may cause frostbite.
Ingestion
While highly improbable, may produce frostbite.
F IRST A ID M EASURES
Inhalation
Move the person away from the source of exposure, keep him/her warm and let him/her rest. Administer oxygen if necessary. Attempt
artificial respiration if breathing has stopped or shows signs of stopping. If the heart stops, perform external heart massage. Seek medical
assistance.
Contact with skin
Incaseofcontactwithskin,washimmediatelywithluke warmwater.Thaw tissueusingwater.Removecontaminatedclothing.Clothingmay
stick to the skin in case offrostbite. If irritation, swelling or blisters appear, seek medical assistance.
Contact with eyes
Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance.
Ingestion
Donotinducevomiting.Iftheinjured personisconscious,rinsehis/hermouthwithwaterandmake him/herdrink 200-300mlof water.Seek
immediate medical assistance.
Further medical treatment
Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs foll owing
exposure, due to the risk of cardiac arrhythmia.
Adhere scrupulously to the warnings and first aid procedures indicated below.

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3. TECHNICAL CHARACTERISTICS
Unit description
TheAmicusseriesofhighefficiencyheatpumps hasbeenspecificallydesignedforusewithradiantfloorheatingsystemsorthoseapplications
where it is necessary to have maximum efficiency when heating.
They have been optimized onheating mode, are abletoproduce water up to 60°C andcan operate down to -20°C ambient temperature.
All versions are supplied with reverse cycle valve used for winter defrost; the HH version is suitable for use in those countries that have
support schemes for use of heat pump technology for heating. The HH heating only versions is factory set and locked to operate only
in heating mode whilst t henoiseis extremely low thanks to the use of a special floating vibration damping system which allows a noise
reduction of about 10-12 dB(A) (Optional).
Frame
All units are made from hot-galvanised sheet steel, painted with polyurethane powder enamel and stoved at 180°C to provide maximum
protection against corrosion. The frame is self-supporting with removable panels. All screws and rivets used are made from stainless steel.
The standard colour of the units is RAL9018.
Refrigerant circuit
The refrigerant utilised is R410A. The refrigerant circuit is assembled using internationally recognised brand name components with all
brazing and welding being performed in accordance with ISO 97/23. The refrigerant circuit includes: sight glass, filter drier, two thermal
expansion valves (onefor cooling mode, onefor heating mode) with external equalizer, 4 way reversing valve, check valves, liquid receiver,
Schrader valves for maintenance and control, pressure safety device (for compliance with PED regulations).
Compressors
The compressors used are a high performance scroll type that incorporates a special scroll design which enhances the efficiency of the
refrigerant cycle when the source temperature is low. In all units the compressors are connected in tandem. The compressors are all
supplied with a crankcase heater and thermal overload protection by a klixon embedded in the motor winding. They are mounted in a
separate enclosure in order to be separated from the air stream thus enabling them to be maintained even if the unit is operating.
Accesstothis enclosure is by the front panel ofthe unit.The crankcase heaterisalways powered when the compressor is instand-by.
Source heat exchanger
The source heat exchanger is made from 3/8” copper pipes and 0,1mm thick aluminium fins with the tubes being mechanically expanded
into the aluminium fins in order tomaximise heat transfer. Furthermore, the design guarantees a low air side pressure drop thus enabling
theuseoflowrotationspeed(andhencelownoise)fans.Allheatexchangersaresuppliedstandardwithfinshydrophiliccoating.
User heat exchangers
The user heat exchanger is a braze welded, plate type heat exchanger, manufactured from AISI 316 stainless steel. The use of this type of
exchanger results in a massive reduction of the refrigerant charge of the unit compared to a traditional shell-in-tube type. A further
advantage is a reductioninthe overall dimensions of the unit. The exchangers are factory insulated with flexible close cell material and can
be fittedwith anantifreezeheater(accessory).Each exchangeris fittedwithatemperaturesensor onthedischargewatersideforantifreeze
protection.
Fans
The fans are direct driveaxial typewithaluminium aerofoil blades, are staticallyand dynamically balanced and are supplied complete with a
safety fan guard complying with the requirements of EN 60335. They are fixed to the unit frame via rubber anti-vibration mountings. The
electric motors, in LS versions are 6 poles type rotating at approximately 900 rpm. In the XL versions the fans are 8 poles type (approx. 600
rpm). As standard, all units are fittedwitha pressureoperatedfanspeedcontroller. The motors are fitted with integrated thermal overload
protection and have a moisture protection rating of IP 54.
Microprocessors
All units are supplied as standard with microprocessor controls. The microprocessor controls the following functions: control of the water
temperature,antifreezeprotection,compressortiming,compressorautomaticstartingsequence(Formultiplecompressors),alarmreset.
Thecontrolpanelissuppliedwith displayshowingall operational icons.Themicroprocessor issetforautomatic defrost (when operatingin
severeambient conditions) andfor summer/ winter change over (only for RV versions). The control also manages the anti-legionella pro-
gram, the integration with other heating sources (electric heaters, boilers, solar panels etc.), theoperation of a threeport modulating valve
(for diverting to DHW or heating) and both the heating circuit pump and the domestic hot water circuit pump.

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Electric enclosure
The enclosure is manufactured in order to comply with the requirements of the electromagnetic compatibility standards CEE EN60204.
Access to the enclosure is achieved by removing the front panel of the unit. The following components are supplied as standard on all
units:mainswitch,asequencerelay that disablesthe power supply inthe eventthat the phasesequenceisincorrect (scroll compressors can
be damaged if they rotate in the wrong direction), thermal overloads (protection of pumps and fans), compressor fuses, control circuit
automatic breakers, compressorcontactors, fancontactors and pump contactors. Theterminal board has volt free contacts for remote ON-
OFF, summer/ winter change over (heat pumps only) and general alarm.
Control and protection devices
Allunitsaresuppliedwiththefollowingcontrols andprotections: userwaterreturntemperaturesensor,antifreezeprotectiontemperature
sensor installed on users water output, domestic hot water supply and return temperature sensors (only versions P2S), high pressure
manual reset, low pressure automatic reset, compressor thermal protection, air fan, thermal protection, pressure transducer (used to
optimize the defrost cycle and to adjust the fan speed depending on ambient conditions), flow switch. All units in HA and HE versions are
also fitted with a temperature probe sensor with “Energy Saving” function, supplied in a separate plastic box, which can beused tostop the
pump use during periods of stand-by, when the water temperature reaches the set point. Doing this the power consumption of the unit is
strongly reduced. The probe sensor must bepositioned inthe hydraulic compensator presentatthe screening technique. The domestic hot
water circuit (only versions P2S) is already equipped with this probe, but it must be installed in the user circuit.
User flow switch
The flow utility is installed as standard on all units and disables the operation of the unit in case of abnormal water flow in the system. The
flow switch is made of a blade system fitted in the flow of the water; it is combined with two permanent magnets that assess the amount of
water in transit and, in function of the measured parameter, enable or not the operation of the unit.
A CCESSORIES DESCRIPTION
Condensate discharge drip tray with antifreeze heater (BRCA)
Installed under the finned heat exchanger, this is used to collect the condensate generated during the heating mode operation. It is fitted
with trace heating to prevent ice formationin low ambient conditions. This accessory may only be factory fitted.
User water strainer
Thewaterstraineristhefirstfiltrationindispensablefortheprotectionof plateheatexchangers andpiping.Thedevicehasafiltrationdegree
of 400 uM and replaceable filter cartridge. The particular conformation toY, allows the deposit of impurities onthe bottom of the seat the
filter-holder and therefore an easy maintenance of the filter itself.
Antifreeze kit (RAEV2, RAEV4)
This kit, used on units fittedwitha hydraulic kit, comprises a “self-heating” electric cablethat is wrapped aroundthe userand domestic hot
water exchanger (P4 Units only), the water circuit pipework. This device iscontrolled by the microprocessor.
Rubber vibration dampers (KAVG)
To be installed beneath the unit base and the ground to avoid the transmission of vibrations (and the noise) to the building.
RS485 serial interface card modbus protocol (INSE)
This controller card enables the controller to communicate with other devices on a BMS using Modbus protocol.
High efficiency E.C. axial fans (VECE)
High efficiency E.C. axial fans, supplied with Brushless DCelectric motors electronically commutated (E.C. motors) able togrants thehighest
energy efficiency class (EFF1), according to the latest EU specifications, with the result of substantial energy consumption reduction for
ventilation and noise reduction thanks to the new ultra efficient blade profiling. The fans are statically and dynamically balanced and
supplied completewith a safety fanguard complying with the requirements of EN 60335.The fans are installed using a special steel profiled
beam who minimize all vibrations and noise emitted. The nominal rotation speed is 700 rpm. All units are fitted with a pressure transducer
for the control of the evaporation/condensation pressure. All electric motors are are fitted with integrated thermal overload protection
rating IP54.
E.C. ductable fans (VECC)
Axial fans with high available Static Pressure, supplied with Brushless DC electric motor electronically commutated (E.C. motors), directly
coupled to the electric motor. The fan wheel and the scroll are made from hot galvanized thick sheet metal, painted with polyurethane
powders,toensurethebestresistanceagainstaggressiveenvironments.TheelectricmotorisahighefficiencyDCbrushlesstypewithexternal

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rotor, to guarantee anideal cooling of the windings and the absence of power lost due topulleys and belt transmission. The fan is statically
and dynamically balanced class 6.3 according to ISO1940. The electric motor has a separate electronic commuter (driver) and a speed
modulation 0-10V,integrated PFC, “burn out”thermal protection (incase ofconsiderablereductionofthe powersupply), protectiondegree
IP54,serialinterfacecardwith Modbusprotocol RTU.The maximum availablestaticpressure is150Paatnominal airflow.
Electronic expansion valve (VTEE)
The electronic expansion valve enables the maximum possible efficiency to be achieved by maximising the evaporator heat exchange,
minimising the reaction time to load variations and optimising the superheat. It is strongly recommended for use in systems that will
experi ence large load variations.
Electronic soft starter (DSSE)
All units are supplied, standard withthe soft starter device which minimize the peak starting current of the compressor reducing down to
the same value of the nominal maximum input current.
Remote control panel (PCRL)
All units are supplied with microprocessor control panel with high definition display, mounted onboard of the unit and it is removable upto
50 mt. distance.
Hydraulic circuit antifreeze kit (KP)
This kit, used on units fitted with a hydraulic kit, comprises a “self-heating” electric cable that is wrapped around the user and domestic hot
waterexchanger(P4 Units only), the water circuit pipework andincludes anarmoured electric heater that is fittedinsidethewatertank.This
device is controlled by the microprocessor and it is used in the unit equipped with hydraulic kit.
Hydraulic kit with one pump without tank - user circuit (A1NTU)
It includes: 1 water pump, expansion vessel, and pressure relief valve (if required by PED norms).
Cascade control system (SGRS)
Cascadecontrol system forthe management of units. The system is made of a separate plastic box, to beinstalled inthe technical room.
It is connected to the units via RS485.

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4. TECHNICAL
DATA
Heating only version (HH)
Performances are referred to the
following conditions:
(1) Heating:Ambienttemperature
7°C DB, 6°C WB, water
temperature 30/35°C.
(2) Averageconditions,low
tempe rature, variable - Reg EU
811/2013
(3) Sound power level in accordance with
ISO 3744.
(4) Sound pressure level at10 mt from the
unit in free field conditions in accordance
with ISO 3744.
HE/LS/HH - P2S/P2U 252 302 402 452 502 602 702 802 902 1002 1202 1402
Heating capacity (EN14511) (1) kW 22.2 29.6 37.3 47.1 50.8 61.2 67.3 74.9 93.2 104.9 114.9 137.1
Total input power (EN14511) (1) kW 5.3 7.1 8.8 11.5 11.8 13.3 15.1 17.2 21.2 24.5 27.8 30.9
COP (EN14511) (1) W/W 4.11 4.16 4.23 4.11 4.32 4.61 4.46 4.36 4.40 4.29 4.13 4.44
Energy Class (2 ) A++ A++ A++ A++ A++ A++ A++ A++ A++ A++ A++ A++
SCOP(2) kWh/kWh 3.83 3.86 3.85 3.85 3.92 4.13 4.04 3.97 3.87 3.85 3.83 3.85
ys,h (2) % 150.1 151.4 150.9 151.1 153.6 162.0 158.4 155.8 151.7 150.8 150.2 151.0
Sound power level (3) dB (A) 73 74 74 75 76 76 77 78 82 83 85 86
Sound pressure level (4) dB (A) 41 42 42 43 44 44 45 46 50 51 53 54
Power supply V/Ph/Hz
Compressors / Circuits n° / n° 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1
Fans n° 222222222223
Refrigerant R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A
Refrigerant charge Kg 7.7 7.7 10.6 10.9 11.1 14.8 14.9 15.2 22.5 22.5 22.5 34.4
Global warming potential (GWP) 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088
Equivalent CO2
charge t 16.1 16.1 22.1 22.7 23.2 30.9 31.1 31.7 47.0 47.0 47.0 71.8
HE/LS/HH - P2S/P2U 1602 1802 2002 2302 2502 2504 3004 3204 3504 4004 4504 5004
Heating capacity (EN14511) (1) kW 151 167.9 182.8 210.6 241.3 229.4 271.4 296.7 339.0 364.9 407 463.7
Total input power (EN14511) (1) kW 34.4 40.2 45.5 49.4 54.8 55.8 63.9 71.5 83.7 88.8 104.1 115.1
COP (EN14511) (1) W/W 4.39 4.18 4.02 4.26 4.40 4.11 4.25 4.15 4.05 4.11 3.91 4.03
Energy Class (2 ) A++ A++ A++ A++ A++ A++ A++ A++ A++ A++ A++ A++
SCOP(2)
kWh/kWh
3.86 3.85 3.84 3.92 3.97 3.83 3.85 3.83 3.91 3.89 3.87 3.86
ys,h (2) % 151.3 150.9 150.4 153.6 155.6 150.2 151.1 150.3 153.5 152.4 151.9 151.5
Sound power level (3) dB (A) 87 87 87 89 91 88 89 90 90 90 92 92
Sound pressure level (4) dB (A) 55 55 55 57 59 56 57 58 58 58 60 60
Power supply V/Ph/Hz
Compressors / Circuits n° / n° 2 / 1 2 / 1 2 / 1 2 / 1 2 / 1 4 / 2 4 / 2 4 / 2 4 / 2 4 / 2 4 / 2 4 / 2
Fans n° 33333466668 8
Refrigerant R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A R410A
Refrigerant charge Kg 34.8 35.3 35.3 49.4 57.3 56.7 66.5 67.1 68.0 79.9 81.1 97.7
Global warming potential (GWP) 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088 2088
Equivalent CO2
charge t 72.7 73.7 73.7 103.1 119.6 118.4 138.9 140.1 142.0 166.8 169.3 204
400/3+N/50
400/3+N/50

16 | P a g e
O PERATIONAL LIMITS
User heat exchanger water flowrate
The nominalwater flow rate given is referred toa dt of 5 °C. Maximum flow rate allowed is the one that presents a dt of 3°C: highervalues may cause
too high pressuredrop.
The minimum water flow rate allowed is the one presenting a dt of 8°C.
Insufficient values cause too low evaporating temperatures with the action of safety devices which would stop the unit.
User hot water temperature (winteroperation)
Oncethesystemisontemperature,theminimumuserwatertemperatureshouldnotbelessthan30°C. Lowervaluescouldcauseincorrectworking
operationof thecompressorandcompressorfailuremay occur.
Themaximum useroutletwatertemperaturecannotexceed55°CforSA/SEversionsand60°CforHA/HEversions.Highervaluesmaycall the action of
safety devices which would stop the unit.
Cold water temperature (RV versionsonly)
The minimum user outlet water temperature allowed is 4°C.
To operate below this limit the unit should need some structural modifications. In this case please contact Lochinvar Limited. The maximum user
outlet water temperature 18°C.
Ambient air temperature
The units are designed and manufactured tooperate, In winter operation (heating mode)from -20°Cto43°C. In cooling mode the units can operate
with ambient air temperatures from -10 to 43°C.
The refrigerantdatamay change without notice. Itis therefore necessary to refer always to the silver label placed on
the unit.

17 | P a g e
If the unit is installed in particularly windy areas, it will be necessary to provide some windbreaker barriers to avoid any
malfunction. Wesuggest toinstall the barriers only ifthe wind exceeds 2,5m/s.
The units, in their standard configuration, are not suitable for installation in saline environments.
InWINTER mode, the unit can bestarted with external air of-20°Cand cold inlet water (about 20°C). Such a
configuration is allowed only for a short time and only to bring the plant to the right temperature.
To reduce this setting time, we suggest to install a 3-way valve which allows to by-pass water from the user to the plant
till the standard conditions are reached.
Units are designed and manufactured to European safety and technical standards. The units have been designed
exclusivelyforheating,coolinganddomestic hotwaterproduction(DHW.).Theunitsmustbeusedforthisspecific purpose
only.Lochinvar will not be liable for claims for damage caused to persons,animals or material goods orproperty causedby
improperinstallation,adjustmentand maintenance orimproperuse.Anyuse notspecifiedin this manual is prohibited.
Ifit’srequired heating operation atoutdoortemperaturesabove20°C orcoolingoperationatoutdoor temperatures
below20°C,isrequiredanevaporating/condensingpressurecontrol(DCCF).Thedevicemonitorstheevaporating/
condensing pressure and maintains it at a constant level by modulating the airflow. It can also be used to reduce noise
emission when ambienttemperatures are lower (e.g. at night).This accessory is supply as standard.
In case of operations outside of these values, please contact Lochinvar before switching on the unit.

18 | P a g e
D OMESTIC HOT WATER PRODUCTION
Amicus Low temperature units can produce domestic hot water by Pre-heating a gas fired water heater or as part of our Hybrid
heat pump system.
With a heat pump it is not possible to achieve the supply temperature or work at the large ΔT’s associated with fossil fuel
boilers hence the output of a standard indirect coil would be substantially less than that calculated above. Special, enhanced
surface area coils for use with smaller heat pumps (<20kW) and plate heat exchanger/buffer tank combinations for larger
units should be used.
Both options are available from Lochinvar Limited.
Compressor capacity steps
NUMBER OF COMPRESSORS
Model
1
2
3
4
252
50%
50%
…
…
302
50%
50%
…
…
402
50%
50%
…
…
452
50%
50%
…
…
502
50%
50%
…
…
602
50%
50%
…
…
702
50%
50%
…
…
802
50%
50%
…
…
902
50%
50%
…
…
1002
43%
57%
…
…
1202
50%
50%
…
…
1402
45%
55%
…
…
1602
50%
50%
…
…
1802
45%
55%
…
…
2002
50%
50%
…
…
2302
43%
57%
…
…
2502
50%
50%
…
…
2504
25%
25%
25%
25%
3004
22%
28%
22%
28%
3204
25%
25%
25%
25%
3504
22%
28%
22%
28%
4004
25%
25%
25%
25%
4504
22%
28%
22%
28%
5004
25%
25%
25%
25%

19 | P a g e
C ORRECTION TABLES
Operation with glycol
Glycol percentage
Freezing point (°C)
CCF
IPCF
WFCF
PDCF
10
-3.2
0.985
1
1.02
1.08
20
-7.8
0.98
0.99
1.05
1.12
30
-14.1
0.97
0.98
1.09
1.22
40
-22.3
0.965
0.97
1.14
1.25
50
-33.8
0.955
0.965
1.2
1.33
CCF: Capacitycorrectionfactor IPCF: Input power correctionfactor
WFCF:Waterflowcorrectionfactor PDCF: Pressure drops correctionfactor
The water flow rate and pressure drop correction factors are to be applied directly to the values given for operation without glycol. The
waterflowratecorrectionfactoriscalculatedinordertomaintainthesametemperaturedifferenceasthat whichwouldbeobtainedwithout
glycol.Thepressuredropcorrectionfactortakes intoaccountthedifferent flowrate obtainedfromtheapplicationoftheflowratecorrection
factor.
Correction tables different Ot
CCCP 0.99 1 1.02
CCCP = Cooling capacity correction factor IPCF = Input power correction factor
Correction tables different Fouling factors
CCCP 1 0.98 0.94
CCCP= Coolingcapacitycorrectionfactor IPCF = Input power correctionfactor
Water temperature diff.(°C)
3
5
8
IPCF
0.99
1
1.01
Fouling factor
0.00005
0.0001
0.0002
IPCF
1
0.98
0.95

20 | P a g e
S OUND DATA
Sound data for standard unit
Model
Octave band (Hz)
Lw
Lp
63
125
250
500
1K
2K
4K
8K
dB
dB
dB
dB
dB
dB
dB
dB
Db
dB(A)
dB(A)
252
86.1
77.3
71.2
69.7
68.6
63.2
59.8
50.7
86.9
73
41
302
87.1
78.3
72.2
70.7
69.6
64.2
60.8
51.7
87.9
74
42
402
87.1
78.3
72.2
70.7
69.6
64.2
60.8
51.7
87.9
74
42
452
88.1
79.3
73.2
71.7
70.6
65.2
61.8
52.7
88.9
75
43
502
89.1
80.3
74.2
72.7
71.6
66.2
62.8
53.7
89.9
76
44
602
89.1
80.3
74.2
72.7
71.6
66.2
62.8
53.7
89.9
76
44
702
90.1
81.3
75.2
73.7
72.6
67.2
63.8
54.7
90.9
77
45
802
91.1
82.3
76.2
74.7
73.6
68.2
64.8
55.7
91.9
78
46
902
95.1
86.3
80.2
78.7
77.6
72.2
68.8
59.7
95.9
82
50
1002
96.1
87.3
81.2
79.7
78.6
73.2
69.8
60.7
96.9
83
51
1202
98.1
89.3
83.2
81.7
80.6
75.2
71.8
62.7
98.9
85
53
1402
99.1
90.3
84.2
82.7
81.6
76.2
72.8
63.7
99.9
86
54
1602
100.1
91.3
85.2
83.7
82.6
77.2
73.8
64.7
100.9
87
55
1802
100.1
91.3
85.2
83.7
82.6
77.2
73.8
64.7
100.9
87
55
2002
100.1
91.3
85.2
83.7
82.6
77.2
73.8
64.7
100.9
87
55
2302
102.1
93.3
87.2
85.7
84.6
79.2
75.8
66.7
102.9
89
57
2502
104.1
95.3
89.2
87.7
85.6
81.2
77.8
68.7
104.9
91
59
2504
101.1
92.3
86.2
84.7
83.6
78.2
74.8
65.7
101.9
88
56
3004
102.1
93.3
87.2
85.7
84.6
79.2
75.8
66.7
102.9
89
57
3204
103.1
94.3
88.2
86.7
85.6
80.2
76.8
67.7
103.9
90
58
3504
103.1
94.3
88.2
86.7
85.6
80.2
76.8
67.7
103.9
90
58
4004
103.1
94.3
88.2
86.7
85.6
80.2
76.8
67.7
103.9
90
58
4504
105.1
96.3
90.2
88.7
87.6
82.2
78.8
69.7
105.9
92
60
5004
105.1
96.3
90.2
88.7
87.6
82.2
78.8
69.7
105.9
92
60
Lw: sound power level according to ISO 3744
Lp: sound pressure level at 10mtrs from unit in free field conditions, direction factor Q=2 according to ISO 3744